i've made a mistake

so i chose a wallpaper i love for my living room. it's up and it looks great. i've bought curtains and cushions to match the colours. the paper is only on the wall that the fireplace is on.

the mistake is that this doesn't go with the theme i want to decorate the rest of the house in. i really love the colours used in penny's (big bang theory) apartment. i have loved it for ages but i didn't have the guts to go for it when i was doing the living room so i went for safe and chose the grown up wallpaper. i want to go for penny's theme now but i dont want to have to change my wallpaper, i still love it. is there anyway i can incorporate it into the rest of the theme/rooms without it looking 'wrong'? i can change my living room curtains and cushions as they were very cheap so that's no issue. i just need to find others that will go with the wallpaper but not match. does that make sense?

i like the second link you gave, good colours (the first ahs too much pink but i know i dont have to use that much). i was worried the wallpaper was too grannyish and wont go, i picked it as it reminds me of being in my parent's friends' house as a young child, they were pensioners but i loved being there. it makes me feel cosy, even though it's blue.